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Author Topic: Introducing/Question  (Read 735 times)

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Offline sweatshirtolympics

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Introducing/Question
« on: August 16, 2016, 02:10:13 PM »
Hey guys, and hello

I'm Frank, finally got ahold of a K0. She's pretty cool, last guy didn't want to Finnish the project haha. He got as far as the two screws on the left and right side of the valve cover up front by the exhaust.... And stripped em...  ::)

So my question to you's twos is: should I go about extracting those screws in the standard fashion, tap and die style or do you guys have some tricks up your sleeves.

Thanks in advance. :)
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Offline flybox1

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Re: Introducing/Question
« Reply #1 on: August 16, 2016, 02:20:29 PM »
IIWM, id have already drilled the heads of the screws off, lifted the cover and turned the remaining threads out with a vice grip.  ;D
Screws are easily replaced.

Welcome to the forum!
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Bankerdanny

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Re: Introducing/Question
« Reply #2 on: August 16, 2016, 02:35:33 PM »
You can use a hand type impact with the included phillips bit.

The screws on our bikes are not phillips, they are JIS (Japanese Industrial Standard) superficially they look like phillips, but the profile of the slots are flatter and so a conventional phillips doesn't seat properly, that's part of why so many people strip them out.

You should invest in a set of JIS screw drivers, you can find them on eBay. You can also invest in JIS impact bits, but I haven't found it to be necessary. The force of the hammer on the impact is typically enough to keep the head from stripping. But for day-to-day use I recommend getting the proper tools.
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"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline sweatshirtolympics

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Re: Introducing/Question
« Reply #3 on: August 16, 2016, 03:03:03 PM »
Ayyee thanks so much guys! Would I be able to remove the cam case with the valve case on it (so I can take the valve case over to shop instead of the whole motor) or would I not have enough clearance because of the frame.
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Offline martin99

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Re: Introducing/Question
« Reply #4 on: August 16, 2016, 03:17:08 PM »
Welcome!

On a 750 the cam cover can't be removed with the engine in the frame. So the motor has to come out.

Search 'frame kit'. Allows access to the cam cover, removal of head and barrels etc without complete removal of the engine. To many it's a Godsend, to others it's unnecessary because (hopefully) you shouldn't need to delve in there too frequently anyway. And then there are those who are reluctant to cut up a good original frame. It's a frequently revisited topic on here.

Just don't ask about pods.......... ;D
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Build threads:
77 750F2 Refresh Project http://forums.sohc4.net/index.php?topic=144075.0
TRIBSA http://forums.sohc4.net/index.php/topic,160296.0.html

1977 CB750 F2
1958 Norton Model 99
2011 Triumph Street Triple 675

Offline sweatshirtolympics

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Re: Introducing/Question
« Reply #5 on: August 16, 2016, 03:27:24 PM »
Haha thanks man, but yeah no pods indeed. I've lurked long enough. :p
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Offline shifty5150

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Re: Introducing/Question
« Reply #6 on: August 16, 2016, 03:48:29 PM »
Reverse drill bit, sometimes with the heat and reverse rotation it'll back out before the head pops off.

*By reverse I mean reverse cutting not just using a regular bit in reverse....if that wasn't clear*
« Last Edit: August 18, 2016, 02:31:52 PM by shifty5150 »
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'70 K0 750

Offline sweatshirtolympics

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Re: Introducing/Question
« Reply #7 on: August 16, 2016, 05:20:32 PM »
Dope thanks shifty, I'll try some of these tomorrow and report back.
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Offline greenjeans

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Re: Introducing/Question
« Reply #8 on: August 18, 2016, 02:21:21 PM »
Heat.  Heat.  Heat.   
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Yep, I'm the kid that figured out how to put things back together...eventually.

Offline sweatshirtolympics

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Re: Introducing/Question
« Reply #9 on: August 18, 2016, 04:29:05 PM »
Yes I was desperately wanting a blow torch but I ended up using a thin sawsall blade and cutting the head of the screw off. But now I'm wondering how to get the throttle cable holder thing out of the cam head..
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Offline danyo

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Re: Introducing/Question
« Reply #10 on: August 20, 2016, 02:24:16 PM »
By throttle cable holder you mean carburetors ?? Pics are worth a ton of words.

Sent from my SM-N900T using Tapatalk

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